Semiconductor Optical Amplifier Based on a Quantum Dot-in-a-Well (QDWELL) Structure Under Optical Pumping

We investigated theoretically dynamics of a semiconductor optical amplifier (SOA) based on the quantum dot-in-a-well (QDWELL) structure. We modified the QDWELL laser rate equations for the case of SOA and solved the modified equation system numerically. We have shown that a strong pumping optical wa...

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Bibliographic Details
Published inIEEE journal of quantum electronics Vol. 50; no. 5; pp. 340 - 347
Main Authors Ben Ezra, Yosef, Lembrikov, Boris I.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.05.2014
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Charge carrier processes
Dynamical systems
Dynamics
Equations
Gain
Lasers
Mathematical analysis
Modulation
Optical pulses
Optical pumping
Optical scattering
Quantum dot (QD)
Quantum dots
quantum well (QW)
semiconductor optical amplifier (SOA)
Semiconductor optical amplifiers
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Summary:We investigated theoretically dynamics of a semiconductor optical amplifier (SOA) based on the quantum dot-in-a-well (QDWELL) structure. We modified the QDWELL laser rate equations for the case of SOA and solved the modified equation system numerically. We have shown that a strong pumping optical wave in the QDWELL SOA synchronizes the QD carrier dynamics, which results in the enhancement of the QDWELL SOA bandwidth and repetition frequency, fast gain recovery, cross-gain modulation, and chirp decrease.
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ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2014.2308393